Shaper for lathes



D. G. WALLACE SHAPER FOR LATI-IES July 1, 1952 3 Sheets-Sheet l I i* i 6 Lm--- Filed Marh 31, 1947 July l 1952 D. G. WALLACE 2,601,813

SHAPER FOR LATHES Filed March 31. 1947 3 sheets-sheet 2 IN VEN TOR` DAVID G WALLACE ATTE! R N EYB July 1, 1952 D. G. WALLACE SHAPER FOR LATHES Filed March 5l. 1947 5 Sheets-Sheet 3 39 3s 52 37 5I fo 35/ Il /Bf 58 N \36 z3 z3 l INVENTOR.

27 u DAVID. C5 .WALLACE 2 R E' mi Patented July 1, 1952 SHAPER FOR LATHES David G. Wallace,` Chicago, Ill.; Arlie M. Wallace administratrix of said David G. Wallace, de-

ceased Application March 31, 1947, Serial No. 738,339

2 Claims.

This invention relates to a Shaper which derives its power from the spindle of a lathe with which it is combined, on which it is mounted.

An object of the invention is to provide a small shaper which can be applied to Small lathes and, being compact, requires but little storage space when not in use.

Another object of the invention is to provide a Shaper which may be mounted on a conventional lathe without changing the present parts of the lathe structure.

With the above and other objects and advantages in view, the invention consists of the novel details of construction, arrangement and combination of parts more fully hereinafter described, claimed and illustrated in the accompanying drawings in which:

Figure 1 is an elevational View of an embodiment of the invention in place on a conventional lathe;

Figure 2 is a sectional view on the line 2 2 of Figure 5;

Figure 3 is a front end view of the device;

Figure 4 is an elevational view partly in section of the work supporting table which is attached to the lathe bed;

Figure 5 is a top plan View of the device;

Figure 6 is a Sectional view on the line 6 6 of Figure l.

Fig. 7 is a Sectional view similar to Fig. 2 with the arm moved 90 from the position it assumes in Fig. 2;

Fig. 8 is a sectional view similar to Figs. 2 and 7 with the arm moved 45 from the position it assumes in Fig. 7, such figures showing the various positions the face plate will assume during the operation of the device.

Referring more in detail to the drawings, the reference numeral I generally designates the shaper embodying the invention, which comprises the frame II, which is mounted on the bed I2 of a lathe I3 by means of the inturned hook-like projection I4, and Set screws I in the projections I4, when tightened, will retain the frame in ilxed relation to the bed. The face plate I5 of the frame II is provided with a guide way I1 having bevelled edges I8 which cooperate with the bevelled edges I9 of the slide plate 20 and gib Screws 2l in the face plate I6 are adjusted to compensate for wear between the plate 20 and the guide way I1 by bearing on the tapered wedge 26 inserted intermediate the plate 20 and guide way I1.

The central portion of face plate within the guide way I1 is cut out as at'22, and guide bars 23 are Secured to the slide 20 by means of fasteners 24 which pass through the cut out to enter the slide 20 at the rear thereof. The bars 23 are provided with spaced apertures 25 for adjustment of the bars by the insertion of the fasteners 24 in the spaced apertures 25.

Slidably mounted between the bars 23 is the block 21 which loosely carries the pin 281 having the threaded end 29 on which is mounted the nut and'washer 30 and 3| respectively. Intermediate the mountingend and threaded end 29, the pin 28 has an oval shaped portion 32 which is receivable in the elliptical shaped slot 33 in the arm 34, and a screw 35 entering the arm 32 passes into the portion 32 to be received in the seat 36 in one end of the slot 33. The screw 35 has the reduced end 31 comparing in size to the seat 36, and a pin 38 engaging the groove 39 in the head of the screw retains this screw from in and out movement to cause the arm 314 to be adjustedwith relation to the portion 32 of the pin 28.

Secured to the opposite end of the arm. 34 by a pin 40 is a short shaft 4I which has the tapered sleeve 42 secured thereto by a pin 43, and this sleeve coacts with the spindle of the head stock 44 of the lathe I3 to cause the arm 34 to oscillate the slide 20 in the guide Way I1.

The slide 2U has a forwardly right angularly extending mounting arm 45 which has the clapper box 46 secured thereto by fasteners 41. The box 46 carries the tool post 48 for mounting the tool 49, the clapper box being adjusted vertically by means of the feed screw 50, such adjustment being gauged by the hand gauge 5I coacting with the screw 50.

A work holder 52 comprising the lower plate 53 is secured to the lathe tool carriage 54 by a bevelled slot 55 engaging the similarly bevelled track- Way 56 of the ycarriage 54, and gib screws 51 are adjusted to compensate for wear between the sliding surfaces of the holder 52 and trackway 56.

The plate 53 is provided with 'a longitudinal T-shaped slot 58 which carries the similar shaped nut member 59 which receives the screw bolt 6I! to secure the guide 6I in the transverse feedways 62 in the plate 53. The guide 6I carries the set screws 463 for engaging a piece of work between 3 on the bed lathe as previously described. The sleeve 42 is mounted on the spindle of the lathe and the arm 34 transmits the rotary motion of the spindle into an oscillating or reciprocating motion. Such motion being accomplished in the following manner. The shaft 4l acting as a xed pivot for the arm 34 Will cause the rotation of the arm on the pivot. The pin 32 rotatably receiving thefblock 21 permits'the block to rotate freely on the pin. As the arm rotates the block slides between the bars 23 until it is urged sideways in one direction by the rotation of the arm 34. The

block engaging the bars will cause the plate 2U to which the bars 23 are xed. to reciprocatetas operation of the reciprocation of the plate Zilzand the operation of the device. The desired tool is mounted in the post 48, and the work is mounted on the holder 52. The tool is adjusted by the feed screw 50, so thatthe tool` may engage the Work.

Thus rotation of the spindleV causes the slide toreciprocateback and;for th, the tool being adjusted as` the work iprogressesby.- the vscrew 59.

The shaper is easily'mounted onithelatheand it is easily removed,l andit is :believed ,that the shaper will accomplish; .the objectsl of the invention.V

From the foregoing."description-I the operation andA structurev of the invention will be apparent to those skilledn; the artandiitg.is.to be understood that' `changesin-the,minor details of vconstruction, arrangementfand combination of parts acoiis may be resorted to, provided they fall Within the spirit of the invention and the scope of the appended claims.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:

LA planer attachment, for use with a lathe havinga beda driven spindle and atool carriage, said device comprising the combination of a supporting frame for mounting on said bed, a trans- Verse guide Way in said frame, a slide plate 'mounted in said guide Way, guide bars mounted on the rear of said slide plate, a block slidably mounted intermediate of said bars and means connected tosaidbl'ock and said spindle for transmitting the rotary motion of said spindle to reciprocating motion for movement of said slide plate.

`2. The invention as in claim 1 wherein means is provided for securing said frame to said bed and said..means attached .to said spindle is adjustable with relation. to :saldi slide plate.

DAVID G'. WALLACEL REFERENCES', CTED.

The following references are` o record inthe le of this patent:

UNITED. STATES PATENTS Number Name Date 181,032 Brede Aug;15', `1876 1,123,788; MCNaughton Ju1y 12,1938 

